CN203685762U - Sealing structure for inner wall of cylinder of hydraulic motor - Google Patents
Sealing structure for inner wall of cylinder of hydraulic motor Download PDFInfo
- Publication number
- CN203685762U CN203685762U CN201320798129.2U CN201320798129U CN203685762U CN 203685762 U CN203685762 U CN 203685762U CN 201320798129 U CN201320798129 U CN 201320798129U CN 203685762 U CN203685762 U CN 203685762U
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- CN
- China
- Prior art keywords
- piston
- packing ring
- sealing ring
- described piston
- hydraulic motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model relates to a sealing structure for the inner wall of a cylinder of a hydraulic motor. The sealing structure comprises a piston (3), a cylinder wall (1) and a piston sealing ring (2), wherein a gap is formed between the piston (3) and the cylinder wall (1); a rectangular ring groove (5) is formed in the side surface of the excircle of the piston (3); the piston sealing ring (2) is embedded in the rectangular ring groove (5); an O-shaped sealing ring (4) is arranged between the bottom of the piston sealing ring (2) and the bottom of the rectangular ring groove (5) in a clamping manner; the outer side end of the piston sealing ring (2) is tightly fit with the cylinder wall (1). According to the sealing structure provided by the utility model, as the piston sealing ring and the O-shaped sealing ring are combined for application, and the piston sealing ring is made from polyimide polymer materials which are excellent in mechanical property, fatigue-resistant, high-temperature-resistant and excellent in chemical stability, and good contact between the piston sealing ring and the cylinder wall as well as between the piston sealing ring and the side wall of the piston is kept all the time, the no-load running-in time of a hydraulic motor is shortened and the stability of the sealing structure is guaranteed.
Description
Technical field
The utility model relates to the field of sealing technology of oil hydraulic motor, particularly relates to a kind of inside wall of cylinder sealing configuration of oil hydraulic motor.
Background technique
In the structure of oil hydraulic motor, between piston and cylinder body, need long relative movement, and between piston and cylinder body, there is hydraulic oil, in order to prevent that hydraulic fluid leak out, necessary installation sealing structure between piston and cylinder body, owing to having relative movement between piston and cylinder body, so sealing structure must have good toughness and wear resistance.
Current, plastics variety and application area are constantly expanded, now become one of important symbol of national industrial development Cheng Du, lightweight that plastics have with himself, anticorrosive, shock-resistant, abrasion performance, processing cost are low etc., and feature becomes the preferred material of various kinds of equipment in functional structure, is a difficult problem so how macromolecular material is applied in the sealing configuration of oil hydraulic motor.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of inside wall of cylinder sealing configuration of oil hydraulic motor, adopts the combination application of piston packing ring and O RunddichtringO, has ensured the stability of sealing configuration.
The utility model solves the technological scheme that its technical problem adopts: the inside wall of cylinder sealing configuration that a kind of oil hydraulic motor is provided, comprise piston, casing wall and piston packing ring, between described piston and casing wall, there is gap, on the cylindrical side of described piston, have rectangle annular groove, described piston packing ring is embedded in rectangle annular groove, between the bottom of described piston packing ring and rectangle annular groove, be gripped with O-ring seals, outboard end and the casing wall of described piston packing ring fit tightly.
The width of described piston packing ring is less than the width of rectangle annular groove.
The cross section of described piston packing ring is rectangle, and on described piston packing ring, any place is furnished with gap.
Described piston packing ring adopts polyimide macromolecular material to make.
beneficial effect
The utility model relates to a kind of inside wall of cylinder sealing configuration of oil hydraulic motor, adopt the combination application of piston packing ring and O RunddichtringO, piston packing ring adopts mechanical property excellence, fatigue resistance,, polyimide macromolecular material that heat-resisting quantity, chemical stability are fabulous makes, make piston packing ring remain good contact with casing wall and piston side wall, shorten the unloaded seating time of oil hydraulic motor, ensured the stability of sealing configuration.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the plan view of piston packing ring described in the utility model;
Fig. 3 is the half sectional view of piston packing ring described in the utility model.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiments are only not used in restriction scope of the present utility model for the utility model is described.In addition should be understood that those skilled in the art can make various changes or modifications the utility model after having read the content of the utility model instruction, these equivalent form of values fall within the application's appended claims limited range equally.
As Figure 1-3, mode of execution of the present utility model relates to a kind of inside wall of cylinder sealing configuration of oil hydraulic motor, comprise piston 3, casing wall 1 and piston packing ring 2, between described piston 3 and casing wall 1, there is gap, on the cylindrical side of described piston 3, have rectangle annular groove 5, described piston packing ring 2 is embedded in rectangle annular groove 5, between described piston packing ring 2 and the bottom of rectangle annular groove 5, is gripped with O-ring seals 4, and outboard end and the casing wall 1 of described piston packing ring 2 fit tightly.
The width of described piston packing ring 2 is less than the width of rectangle annular groove 5.
The cross section of described piston packing ring 2 is rectangle, and on described piston packing ring 2, any place is furnished with gap 21.
Described piston packing ring 2 adopts polyimide macromolecular material to make.
Claims (4)
1. the inside wall of cylinder sealing configuration of an oil hydraulic motor, comprise piston (3), casing wall (1) and piston packing ring (2), between described piston (3) and casing wall (1), there is gap, on the cylindrical side of described piston (3), have rectangle annular groove (5), described piston packing ring (2) is embedded in rectangle annular groove (5), it is characterized in that, between described piston packing ring (2) and the bottom of rectangle annular groove (5), be gripped with O-ring seals (4), outboard end and the casing wall (1) of described piston packing ring (2) fit tightly.
2. the inside wall of cylinder sealing configuration of a kind of oil hydraulic motor according to claim 1, is characterized in that: the width of described piston packing ring (2) is less than the width of rectangle annular groove (5).
3. the inside wall of cylinder sealing configuration of a kind of oil hydraulic motor according to claim 1 and 2, is characterized in that: the cross section of described piston packing ring (2) is rectangle, and the upper any place of described piston packing ring (2) is furnished with gap (21).
4. the inside wall of cylinder sealing configuration of a kind of oil hydraulic motor according to claim 1, is characterized in that: described piston packing ring (2) adopts polyimide macromolecular material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320798129.2U CN203685762U (en) | 2013-12-06 | 2013-12-06 | Sealing structure for inner wall of cylinder of hydraulic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320798129.2U CN203685762U (en) | 2013-12-06 | 2013-12-06 | Sealing structure for inner wall of cylinder of hydraulic motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203685762U true CN203685762U (en) | 2014-07-02 |
Family
ID=51007670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320798129.2U Expired - Fee Related CN203685762U (en) | 2013-12-06 | 2013-12-06 | Sealing structure for inner wall of cylinder of hydraulic motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203685762U (en) |
-
2013
- 2013-12-06 CN CN201320798129.2U patent/CN203685762U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20201206 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |